HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) References Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by H. T. LE, L. Search for Related Content GeoRef GeoRef Citation

On Cagniard's problem for a qSH line source in transversely isotropic media

DEPARTMENT OF GEOLOGY AND GEOPHYSICS THE UNIVERSITY OF CALGARY, CALGARY, ALBERTAT2N 1N4 Canada

Abstract

This paper studies the response to a qSH pulse generated by a line source, of two homogeneous half-spaces (transversely isotropic elastic or viscoelastic) separated by a plane boundary.

For a simple model of two transversely isotropic half-spaces in welded contact, all the arrivals, including the incident, reflected, head, transmitted, and evanescent waves, that are predicted by the isotropic theory are present. For the 15% change in wave speeds considered here, anisotropy changes the dynamic and kinematic characteristics of the pulses. Depending on the anisotropy factor, the change can be pronounced. Because of the significant time shift and amplitude variation of the first arrivals due to anisotropy, proper consideration of the anisotropy of the medium is necessary in interpreting vertical seismic profiles or crosshole seismic data by means of any travel time or amplitude tomographic scheme.

This article has been cited by other articles:

				H. Karabulut and J. F. Ferguson SH wave propagation by discrete wavenumber boundary integral modeling in transversely isotropic medium Bulletin of the Seismological Society of America, April 1, 1996; 86(2): 524 - 529. [Abstract] [PDF]